Locomotive



June 18, 1929. L. E. OSBORNE LOCOMOTIVE Filed March 19, 1.926 2Sheets-Sheet live/r367: 'llfmuazw 0&607 7214 June 18, 1929. 1.. g.OSBORNE LOCOMOTIVE Filed March 19, 1926 Z-SheetS-Sheet mumfibr: .17Ola/Mai Qiborm Patented 18, 1929.

' outrun STATES PArsnr orricn.

LONNIE nnwnnn OSBORNE, F PITTSBURGH, PENNSYLVANIA, ASSIGNOR, BY MESNEASSIGNMENTS, TO THE STANDARD STOKER COMPANY INC., OF NEW YORK, N. Y.,

A. CORPGRATIGN' OF DELAWARE.

Loooino'rxvn.

Application filed March 19, 1926. Serial No. 95,9 18.

The invention relates to the fire-boxes of locomotives, and to the meansfor'delivenng fuel thereto; and it consists in providing the back-headof the fire-bog with an inwardly opening alcove into which fuel isdelivered and from which it is scattered over the grate, therebyreducing or eliminating encroachment on the grate area. I

Preferred embodiments of the invention are hereinafter described, andare illustrated in the accompanying drawings, in which Fig. 1 is adetail longitudinal vertical section of a fire-box and the fuel feedingdevice associated therewith;

Fig. 2 is a detail sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a detail longitudinal vertical section of the fire-box andfuel delivery device, showing a modified form of construction;

of Fig. 3;

Figs. 5 and 6 are, respectively, detail vertical and plan sections ofthe fire-box, showing a modified form of construction.

in the use of mechanical stokers in connection with locomotives it hasheretofore been the practice to deliver the fuel from a nozzle or platelocated within the fire-box, and hence subjected to the heat developedtherein. This heat is so intense that the fuel delivering ele ment isquickly destroyed and must be re placed, usually necessitating thedrawing of the fire, putting the locomotive out of service for manyhours,

The construction herein disclosed provides for the-housing of thedelivery element of the fuel feeding device within an alcove, andtherefore sorhewhat removd from the zone of intense heat,'andfacilitates-its further pro- 40 tection by the introduction of air fromwithout. The construction also makes it practicable to remove thedelivery element for re placement without entering the fire-box, and:

consequently without requlring the drawing of the fire.

The back-head of a locomotive fire-box is representedat 10, and in theconstruction shown in Figs. 1 and 2 it is provided in its lower portionwith an outwardly bulging 5o portion 11, forming an inwardlyopeningalcove 12. A fuel conveyin conduit 13, located below the deck 14o the locomotive cab, extends under the lower margin of Fig. 4 is adetail section on the lined--4- the bulged portion of the back-head, itsinner or delivery end 15 being upturned and being housed within thealcove. This upstanding portion of the conduit may be readily removablefrom the section of which it forms a continuation.

A fuel-advancing element, here shown as a helical screw 16, is housedwithin the conduit and terminates at the elbow from which the upstandingsection 15 rises. For the purabove the delivery end of the conduit andat its rearward side, and will deliver a steam blast in the form of oneor more jets across the conduit end for the purpose of scattering thefuel, issuing from the conduit, over the grate 19. A steam ipe 20 leadsto the nozzle 18 from any desired source of supply.

The alcove 12 need not be provided with a floor, and the relative sizesof'the conduit section 15 and the alcove may be such that suflicient airwill be admitted to cool the conduit section, the volume, however, notbein sufiicient to interfere with the draft through the grate.

In the construction shown in Figs. 3 and 4, the back-head 10 isapertured in its lower portion, as shown at 21, and this aperture iscovered by a casing 22 removably secured, as by means of bolts, to theback-head and being of sufiicient size to form, with the side margins ofthe aperture 21, an, alcovewhich may be'of the same size as the alcove12. This casing is preferably rovided with an openable section 23,suitab 31' secured, as by a hinge, as shown, and which permits readyaccess to the alcove for the purpose of observation or rectification ofany irregularity of action in the fuel delivery. In all other respectsthe device is or may be of the same charactor as that shown in Figs. 1and 2.

For the purpose of repair or replacement the conduit may be withdrawnthrough the bottom of the alcove, or when the form of construction shownin Figs. 3 and 4 is followed, the casing 22 may be detached and theupstanding section only of the conduit removed. These riprairs orreplacements may be made while a e is maintained on the grates, and,

in a comparatively short time, the necessity for shopping the locomotivefor such repairs usually being avoided.

The width of the offset portion of the back-head may be varied,extending it, if desired, entirely across to the side walls, as shown inFigs. 5 and 6. When-the width is substantially greater than the diameterof the conduit end 15, it is desirable to blank off the grate in therear corners of the fire-box by the introduction of dead plates 24, 25.

By increasing the width of the offset portion the delivery of fuel, bymeans of steam jets, upon the back corners of the grate is facilitated.

The details of the structure may be varied without departing from thescope of the invention.

I claim as my invention 1. In combination, a fire-box having a hollowbackhead, such backhead being offset outwardly to form an alcove, and afuel conveying conduit delivering within the alcove.

2. In combination, a fire-box having a hollow backhead, such backheadbeing offset outwardly to form an alcove, a fuel'carrying conduitdelivering within the alcove, and a steam nozzle for directing adistributing blast through the alcove into the lire-box.

3. In combination, a fire-box having a hollow backhead, such backheadbeing offset outwardly to form-an alcove, and a fuel conveying conduitdelivering upwardly within the alcove.

4. In combination, a fire-box having a I "ing fuel upon said grates.

with an inwardly open alcove adjacent its lower margin, a fuel conveyingconduit delivering within the alcove, and a steam nozzle for directing adistributing blast through the alcove. 4

7. In combination, a fire-box having a hollow backhead, such back-headbeing offset outwardly, and a fuel conveying conduit delivering, withinsaid offset portion of the back-head.

8. In combination, a locomotive fire-box having a hollow backhead, suchbackhead being offset outwardly, grates Within said fire-box, a stokerincluding a fuel conveying conduit delivering within the offset portionof the back-head, and a steam nozzle at the end of said conveyingconduit for distribut- 9. In combination, a locomotive having a fireboxprovided with a backhead and a grate extending forwardly from thebackhead, a

fuel transfer conduit entering the firebox outside of the rear margin ofthe grate through an opening in the backhead and delivering upwardly, asection of the backhead being offset outwardly to inclose the deliveryend of the conduit, and means for scattering fuel from the conduit overthe fire bed.

10. In combination a fire-box havinga hollow backhead, such backheadbeing offset to form an alcove open to the firebox chamber, and a fuelconveyin conduit delivering upwardly within the a cove. I

11. In combination, a firebox having a hollow backhead, such backheadbeing oifset to form an alcove open to the firebox eham-' her, and afuelconveying conduit delivering to the firebox through the alcove.

, 12. The combination of a fire box including a grate, and a back headupstanding from the rear ofthe grate and provided with an alcove in thelower marginalportion thereof, and a mechanical stoker including meansfor delivering fuel to the alcove and means for scattering such fuel onthe grate.

In testimony whereof I afiix my signature.

L. EDWARD OSBORNE.

CERTIFICATE OF CORRECTION.

Patent N0. 1,718,065. Granted time 18, 1929, to

YLONNIE EDWARD OSBORNE.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiringcorrection as follows: Page 2,strike out lines 66 and-75, comprising claim-9; same page, lines 76, 81and 86, for claim numbers "10, 11 and 12" read "9, l0 and 11''; and thatthe said Letters Patent should be read with these corrections thereinthat the same may conform to the record of the case in the PatentOffice. I

Signed and sealed this 30th day of July, A. D. 1929.

M. J. Moore, (Seal) Acting Commissioner of Patents.

